Dynamo.



No. 630.568. Patented Aug. 8, I899. H. B. SCHNEIDER.

DYNAMO.

Application filed July 13, 1898.)

(No Model.)

UNITED STATES PATENT OFFICE.

HERMAN l3. SCHNEIDER, OF CHICAGO, ILLINOIS.

DYNAMO.

SPECIFICATION forming part of Letters Patent No. 630,568, dated August 8, 1899.

Application filed July 13, 1898. Serial No. 686,473. (No model.)

To ztZZ whom it may concern.-

Be it known that I, HERMAN B. SCHNEIDER,

a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois,have invented a new and useful Improvement in Electric Dynamos, of which the following is a specification.

My invention relates to improvements in electric dynamos wherein an electric current is used in connection with a carbon filament for producing light.

My invention consists in certain novel constructions'and combinations of devices forautomatieally regulating or governing the current of electricity, as will be understood by the accompanying drawings and specification.

In the drawings, Figure l is the dynamo, having a section of the magnets broken away to show the armature. Fig. 2 is a cross-section of Fig. 1 at 2; Fig. 3, a perspective of the regulator or governor. Figs. 4, 5, and 6 are cross-section and detail views of Fig. 3. Fig. 7 is a diagrammatic View of the circuit.

Similar letters refer to similar parts througlr out the several views.

The dynamo is composed of the magnets A and armature B, to which is attached the wheel 0 for communicating motion. The armature-coil is the usual insulated copper wire, and in this I insert the grooved block F,which contains the coil E and the pivoted metallic arm D, D being the pivot-pin, and D the pin which supports the free end of the arm D.

D is a light coil-spring which serves 'to keep the free end of arm D in connection with the pin D The coil E is composed of German-silver wire and insulated in the usual manner, one end of which is attached to pin D and the other end to pin D In operating the dynamo power is applied to the pulley O, which is connected in the usual manner to the armature. The electric current is thus generated by the revolving armature between the poles of the magnets and conducted in the usual manner to a carbon filament for producing light.

The carbon filament of the usual. incandescent lamp being of a very delicate structure is not infrequently burned out by too great a pressure of the current. As the pres sure or magnitude of the current generated by a dynamo depends upon the speed applied to the armature, it is of much importance to have the current governed. Therefore my supplementary coil and block and arm are inserted and operated by the centrifugal force of the armature.

In operation when the armature is put in motion the arm D is held in connection with pin D by the spring D',and the current passes direct through the arm D connection; but should the power applied to the armature from any cause produce too great a speed, and thus endanger the filament, the arm D is disconnected at its free end from pin D by the centrifugal force of the revolving armatureand the current forced to travel around and through the coil E, and thus resistance to the current is produced, and thereby the carbon filament is protected.

The lever D is held in contact with pin D by means of the spring D. This spring may be made of any desired strength to hold the contact against the centrifugal force until the 7 5 desired speed is obtained for producing the current wanted or all that the filament in the lamp will bear without injury. Should the speed be increased by any means beyond that required to produce all the current that the lamp-filament will stand,the centrifugal force will be thereby increased and the free end of lever D thus disconnected with the pin D WVhen the pivoted metal lever D is in contact with pin D the current passes direct through the arm and copper coil B; but when disconnected the current must necessarily pass through the German-silver coil E and is thus modified sufliciently to prevent damage to the carbon filament of the lamp. 0

Deeming this a sufficient explanation, what I claim, and desire to secure by Letters Pat cut, is'- 1. In an armature for dynamos, the block. orsupport F,carrying and supporting the sup- 9 5 plemental coil E, and the pivoted connecting arm D, said supplemental coil adapted to operatc as a governor to the current generated by the armature as it is rotated between the and disconnecting said resistant coil with the poles of the magnets, substantially as dearmature-coil by means of the spring D and I0 scribed. the centrifugal force of the armature when 2. A governor or regulator fer electric dyin operation, substantially as described. 5 namos consisting of a block or frame carry- HERMAN B. SCHNEIDER.

ing or supporting a resistant coil, and a piv- Witnesses:

FRED W. GEITZ.

oted connecting-arm attached to the armature O. \VHITNEY, and adapted to be operated for connecting 

